Magnetic separator.



Patented Dec. -2, i902.

@"SEHQLL.

sama. (Application tiled Sept. 13, 1991.7

3 sheets-subsi ma man.)

Patented Img. 2, 19102.

c scou., I MAGNETIC SEPARATUR.

- (Applicatiummsd Sept. 13, 1.901..)

3 Sheets-nes( 2.

fave,

fla

Patented usm-.2. |9012.

nu.A 715350.

C. SCHLL, 'iAGNETiC SEPARATQR. (Application med sem. 13, 190;.)

uw mmm 3 Sheets-Sheet 3.

INVENTOR 1a it nppertains to make and zo applying scraping devices 2 5 ranged within its 4o l In thev accompanying 5o mounting,r the elcctroinagnets.

CARL SCHOLL, OF GPPINGEN, GERMANY.

MAGNETIC SYEPARATQR.

SPECIFICATION forming para of To @ZL wiz/om it may concern:

Beit known that I, CARL SCHOL'L, a citizen ofthe German Empire,residing at Gppingen, y

in the Kingdom of \Viirtemberg,' Germany, 5 have invented certain new and useful Improveniente in Magnetic Separators; and I do hereby declare the following to be a`nll,clear,I

and exact description' of the invention, such as will enable othersskiiled in the art to which use the same.

The present invention relates to electromagnetic separators or devices for separating metallic or magnetic particles, pieces, oriconstituen'ts from-'fa mass containing them, to-

gether with non-magnetic portions or `constituents.

The object'of' my invention is to eiectually eliminatethe necessity of frequent interruptions of the operation of the separator or of kind.

Tothis end my invention involves the use ofmeans in connection with a `separatingdrum having a number of electromagnets arperiphery whereby no current will pass through the coilsof the rotating electromagnets at certain positions in the i course of their rotation, whereby whenever these electromagnets and the drurn in which 3o they are arranged reach such point in their way the separatingedrum will cease toattract the metallic or magnetic particles or pieces .withdrawn from the mass, and vthese particles 0r pieces will drop away from @ne drum to be carried to the collecting-point1 in a manner 'readily understood and well known.

Other features of the inventionwill be brought out inthe following description and pointed out in the claims annexed.

drawings, Figure l represents a side elevationoi' a separatingxnachine embodying my invention and einploying three separating-drums; Fig. 2, a tront 'elevation of the saine; Fig. 3, a vertical transverse section through one oi the drums,

on an enlargedscale; land l`ig. 4, a similar section on the lino A A, Fig. 2, to show hcw theelectric current is supplied.Y Fig. 5 is anenlarged detail view showing the method of grannuatie vic-w illustrating the connections to apparatus of this Letters Patent No. 715,160, dated 'Deceinber L2, Application filed September 13, 1901. Serial No. 75,3'l2. (Ncmuiiel.)

vthe spindles or shafts of between the sections of the distributor and the\ several sets' of magnets. As shown in' the drawings, anumber of separating-d ruins b are' mounted in the-machineframe a, the shafts or journals c of said drums being provided with cog-wheels d, engaging with intermediate coge e, one of said intermediate coge e being driven `from a belt-pulley f in a manner weli known and understood.

The-journal c ofthe upper drum b extends beyond the frame ct at tlie oppositev side and is there provided with a sprocket-wheel g,

over whiehfpasses a chain m, `which in turn engages with the sprocket-wheels i, keyed to a series of rotary brushes h5 which brushes are arranged in contact with the drums b, as shown. By this means when the drums are rotated the rotary brushes'are caused to rotate in contact with them in an opposite direction and to keep the said drums clean; but these brushes are by no means adapted or strong enough to scrape metallic or magnetic particles or pieces adhering to them by virtue of the magnetic attraction of the drums. In order to adjust ,the tension of the chain m., an idler-sprocket l is journaled in an adjustable bearing-bracket la, which may be moved away from or toward the chain, as desired and as will be understood.

The number of separating-droins to be einployed depends on the character of the work "to be performed. The arrangements and construction of actuating devices for the drums and the cleaning-brushes thusfar described have been setiorth in illustrating a device to which' my invention inayfbe'appiicd. 'The particular features of the said invention will now be given in detail. p

As seen from Figsff and G, the separating druxn is equipped with electromagnetic coils arranged in series, sixsets of such coils being employed in the" machine illustrated. The coils inay .be arranged in any desired manner, but preferabiy are' constructed as follows; 'lhe-separating-druiu is provided inside with a series of longitudinally-arranged bars'o o', ol soit iron` 0n the bars o (which alternate with the bars o')are mounted a series of electromagnets "n, the cores 'n' of which are secured to the respective har o in any suitable IOO :lrum sfiiqgionsistingof nsulated'seetions cor'- respondn'g innumber to the'set's of magnets, oonneetdns between the several sections of ihe ring and the respective sets 'ci magnets, two brushes carrying e current of the same polarityand one brush earl-ying a current o f the opposite polarity all contaeting with the distributer-ringat spaced intervals, whereby current is fed to the m'agnets connected withthe sections intermediste the brushes of.' o'posite polarity and not to the magnets oonneeted with the sections intermediate vthe brushes of the same polarity, resulting' in s shifting partial magnetic field upon the surf face of the drum.

4. In a rmignetie separator, a, rotary drum, a plurality of sets of eleetromagnets disposed therein and each setV coextensve with the length of the drum, s rotary distribeter-rini` revolving with the drum and composed of sections corresponding in number to the sets of magnets, connections between the sections of the ring and the two adjacent 'sets of megnets, three brushes contaetingwith the -distributar-ring, two of the brushes carrying e. current of the ssmepolarity and disposed in such mnnnerthnt there shall at all times be a complete section thereof interposed between the` seme,eudthe other brush carrying eenrrent of opposite polarity, whereby current is fed to theinagnets .connected with the see. tions intermediate the brushesof opposite polerity and netto the magnets connected with the section intermediate theV brushes of the same polarity, `thus resulting` in a. shifting partiel magnetic field upon and rotating lin an opposite'direction reletive'to the drum.

In testimony whereot` I ailx'niy signature,

in presence of two witnesses.

CARL SCHOLL.

Witnesses:

' RUDOLF StroEBzLAon,

WALTER SCHWARBECK. 

